Title
Generalization of the Virtual Redundant Axis Method to Multiple Serial-Robot Singularities
Date Issued
01 January 2019
Access level
metadata only access
Resource Type
book part
Author(s)
Röttgermann S.
Weber B.
Kecskeméthy A.
University of Duisburg-Essen
Publisher(s)
Springer International Publishing
Abstract
This paper describes a generalization of the virtual redundant axis (VRA) method previously introduced by the authors for robust, position-controlled inverse kinematics of serial robots passing through or close to a singular configuration. While the VRA method regards only one body- or inertially-fixed virtual axis, the new approach can handle multiple “floating” virtual axes which are smooth functions of the robot configuration and are not necessarily fixed to the robot links or base. This allows for robustly negotiating inverse kinematics even in the presence of multiple singularities with a single parameter set, while concentrating tracking errors solely in the locked directions. The paper discusses the theory, including a novel Jacobian form with non body-fixed joint axes, validating its performance on a real industrial robot Kuka KR15/2 and comparing it to the weighted damped least squares method (WDLS).
Start page
499
End page
506
Volume
584
Language
English
OCDE Knowledge area
Robótica, Control automático
Scopus EID
2-s2.0-85051476873
Source
CISM International Centre for Mechanical Sciences, Courses and Lectures
Resource of which it is part
CISM International Centre for Mechanical Sciences, Courses and Lectures
ISSN of the container
02541971
Sources of information: Directorio de Producción Científica Scopus